Low-temperature heat capacities and thermochemistry on the complex of erbium perchlorate with L-alpha-glycine [Er-2(L-Gly)(2)(H2O)(12)](ClO4)(6) center dot 4H(2)O(s)
文献类型：期刊论文
| 作者 | Di, You-Ying1; Tan, Zhi-Cheng2 |
| 刊名 | acta chimica slovenica
 |
| 出版日期 | 2007 |
| 卷号 | 54期号:4页码:761-768 |
| 关键词 | complex of erbium perchlorate with L-alpha-glycine adiabatic calorimetry low-temperature heat capacity isoperibol solution-reaction calorimetry Standard molar enthalpy of formation |
| 英文摘要 | a coordination compound of erbium perchlorate with l-alpha-glycine, [er-2(l-gly)(2)(h2o)(12)](clo4)(6) center dot 4h(2)o(s), was synthesized. by chemical analysis, elemental analysis, ftir, tg/dtg, and comparison with relevant literature, its chemical composition and structure were established. the purity was found to be > 99.0%, without melting point. low-temperature heat capacities were measured by a precision automated adiabatic calorimeter over the temperature range from 78 to 372 k. an obvious endothermic peak in the heat capacity curve was observed over the temperature region of 275-296 k, which was ascribed to a solid-to-solid phase transition according to the results of tg/dtg analysis. the temperature t-tr, the enthalpy delta h-tr(m) and the entropy. delta s-tr(m) of the phase transition for the compound were determined to be, t-trs = ( 283.315 +/- 0.061) k, ( 11.026 +/- 0.059) kj mol(-1) and ( 38.918 +/- 0.206) j k-1 mol(-1). two polynomial equations of heat capacities as a function of the temperature in the regions of 78-275 k and 296-372 k were fitted by the least square method, respectively. the mechanism about thermal decomposition of the complex was deduced on the basis of the tg/dtg analysis. in accordance with hess law, the standard molar enthalpy of formation for the complex was determined as delta h-f(m)o= -( 7794.40 +/- 1.01) kj mol(-1), by an isoperibol solution-reaction calorimeter. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | calorimeter |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000252091300014 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140719]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di, You-Ying,Tan, Zhi-Cheng. Low-temperature heat capacities and thermochemistry on the complex of erbium perchlorate with L-alpha-glycine [Er-2(L-Gly)(2)(H2O)(12)](ClO4)(6) center dot 4H(2)O(s)[J]. acta chimica slovenica,2007,54(4):761-768. |
| APA | Di, You-Ying,&Tan, Zhi-Cheng.(2007).Low-temperature heat capacities and thermochemistry on the complex of erbium perchlorate with L-alpha-glycine [Er-2(L-Gly)(2)(H2O)(12)](ClO4)(6) center dot 4H(2)O(s).acta chimica slovenica,54(4),761-768. |
| MLA | Di, You-Ying,et al."Low-temperature heat capacities and thermochemistry on the complex of erbium perchlorate with L-alpha-glycine [Er-2(L-Gly)(2)(H2O)(12)](ClO4)(6) center dot 4H(2)O(s)".acta chimica slovenica 54.4(2007):761-768. |
入库方式： OAI收割
来源：大连化学物理研究所
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